DE19853119A1 - Catalytic converter and recirculation system for internal combustion engine - Google Patents

Catalytic converter and recirculation system for internal combustion engine

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Publication number
DE19853119A1
DE19853119A1 DE19853119A DE19853119A DE19853119A1 DE 19853119 A1 DE19853119 A1 DE 19853119A1 DE 19853119 A DE19853119 A DE 19853119A DE 19853119 A DE19853119 A DE 19853119A DE 19853119 A1 DE19853119 A1 DE 19853119A1
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Germany
Prior art keywords
exhaust gas
catalytic converter
gas recirculation
internal combustion
combustion engine
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Granted
Application number
DE19853119A
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German (de)
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DE19853119C2 (en
Inventor
Walter Dr Piock
Martin Dr Wirth
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AVL List GmbH
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AVL List GmbH
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Priority to DE29825214U priority Critical patent/DE29825214U1/en
Publication of DE19853119A1 publication Critical patent/DE19853119A1/en
Application granted granted Critical
Publication of DE19853119C2 publication Critical patent/DE19853119C2/en
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B47/00—Methods of operating engines involving adding non-fuel substances or anti-knock agents to combustion air, fuel, or fuel-air mixtures of engines
    • F02B47/04—Methods of operating engines involving adding non-fuel substances or anti-knock agents to combustion air, fuel, or fuel-air mixtures of engines the substances being other than water or steam only
    • F02B47/08—Methods of operating engines involving adding non-fuel substances or anti-knock agents to combustion air, fuel, or fuel-air mixtures of engines the substances being other than water or steam only the substances including exhaust gas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/14—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the exhaust system
    • F02M26/15—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the exhaust system in relation to engine exhaust purifying apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/22—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage
    • F02M26/23—Layout, e.g. schematics
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B75/00—Other engines
    • F02B75/02—Engines characterised by their cycles, e.g. six-stroke
    • F02B2075/022—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle
    • F02B2075/025—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle two
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Exhaust-Gas Circulating Devices (AREA)

Abstract

A primary catalytic converter (5) is followed by a second storage catalytic converter (6). The exhaust gas recirculation line (4a) branches out of the exhaust system upstream of the second catalytic converter. The first catalytic converter is immediately downstream of the exhaust manifold. It may be an oxidation- or three-way catalytic converter. There is an exhaust gas recirculation cooler (9) in the recirculation line. The connection of the recirculation line into the inlet system is located immediately before of the cylinder head inlet.

Description

Die Erfindung betrifft eine Brennkraftmaschine mit einem Einlaßsystem und einem Auslaßsy­ stem, in welchem zumindest ein erster Abgaskatalysator angeordnet ist, sowie mit einem Ab­ gasrückführsystem, wobei zur externen Abgasrückführung stromabwärts des ersten Abgaska­ talysators eine Abgasrückführleitung vom Auslaßsystem abzweigt und in das Einlaßsystem mündet.The invention relates to an internal combustion engine with an intake system and an exhaust system stem, in which at least a first exhaust gas catalytic converter is arranged, and with an Ab gas recirculation system, for external exhaust gas recirculation downstream of the first exhaust gas an exhaust gas recirculation line branches off from the exhaust system and into the intake system flows.

Es ist bekannt, die Abgasrückführung als effektive Maßnahme bei selbst- und fremdgezünde­ ten Brennkraftmaschinen zur NOx-Reduktion einzusetzen. Darüber hinaus kann bei Otto- Motoren mit Saugrohreinspritzung mittels Abgasrückführung durch eine mögliche Entdros­ selung eine Verringerung des Kraftstoffverbrauches erzielt werden.It is known to use the exhaust gas recirculation as an effective measure in self- and externally ignited internal combustion engines for NO x reduction. In addition, a reduction in fuel consumption can be achieved in Otto engines with intake manifold injection by means of exhaust gas recirculation through possible detangling.

Einerseits kann dabei das Abgas intern rückgeführt werden. In diesem Zusammenhang wird das Abgas oft als Restgas bezeichnet, da es im wesentlichen im Zylinder der Brennkraftma­ schine verbleibt. Realisiert wird die interne Abgasrückführung bei großen Abgasrückführraten unter anderem durch variable Ventilsteuerungen, die ein teilweises Rückschieben des ver­ brannten Abgases vom Brennraum in den Ansaugtrakt ermöglichen, welches anschließend wieder angesaugt wird.On the one hand, the exhaust gas can be recycled internally. In this context the exhaust gas is often referred to as residual gas, since it is essentially in the cylinder of the internal combustion engine machine remains. Internal exhaust gas recirculation is implemented at high exhaust gas recirculation rates among other things through variable valve controls, which partially push back the ver allow burnt exhaust gas from the combustion chamber into the intake tract, which then is sucked in again.

Andererseits ist es bekannt, das Abgas extern rückzuführen, wobei das Abgas unmittelbar nach dem Auslaßventil bzw. dem Auslaßkanal abzweigt und in den Ansaugtrakt zurückge­ führt wird.On the other hand, it is known to recirculate the exhaust gas externally, the exhaust gas being immediate branches off after the outlet valve or the outlet duct and back into the intake tract leads.

Aus der EP 0 558 072 A1 ist ein Abgasrückführsystem bekannt, bei dem das rückzuführende Abgas durch den Zylinderkopf in den Ansaugkanal im Zylinderkopf zylinderselektiv geleitet wird. Nachteilig ist dabei die zusätzliche Aufheizung des Zylinderkopfs mit heißem Abgas und die Ablagerungsbildung in den erzwungenermaßen kleinen Abgasrückführkanälen.An exhaust gas recirculation system is known from EP 0 558 072 A1, in which the exhaust gas recirculation system Exhaust gas passed through the cylinder head into the intake duct in the cylinder head in a cylinder-selective manner becomes. A disadvantage here is the additional heating of the cylinder head with hot exhaust gas and the formation of deposits in the forced small exhaust gas recirculation channels.

Aus der US 4 213 430 A ist eine Brennkraftmaschine mit externer Abgasrückführung be­ kannt, bei der das Abgasrückführsystem stromaufwärts eines Dreiweg-Katalysators abzweigt. Anordnungen dieser Art sind weit verbreitet und stellen sozusagen die klassische Art der Ab­ gasrückführung bei Systemen mit einem Katalysator dar. Aus volumens- und thermischen Gründen ist der Katalysator nicht zu knapp beim Motor angeordnet.From US 4 213 430 A an internal combustion engine with external exhaust gas recirculation is be knows, in which the exhaust gas recirculation system branches upstream of a three-way catalytic converter. Arrangements of this type are widespread and represent, so to speak, the classic type of Ab gas recirculation in systems with a catalytic converter. From volume and thermal For reasons the catalyst is not too close to the engine.

Aus der US 5 443 547 A ist eine Zweitakt-Brennkraftmaschine der eingangs genannten Art bekannt, bei der das Abgasrückführsystem stromabwärts eines Abgaskatalysators und strom­ aufwärts eines Schalldämpfers vom Auslaßsystem abzweigt. Dadurch werden teilweise gerei­ nigte Abgase zurückgeführt.From US 5 443 547 A is a two-stroke internal combustion engine of the type mentioned known in which the exhaust gas recirculation system downstream of an exhaust gas catalytic converter and current branches off a silencer from the exhaust system. This will partially clean up reduced exhaust gases.

Weiters ist aus der DE 195 43 219 C1 eine Diesel-Brennkraftmaschine mit einem Speicher­ katalysator bekannt, in welchem Speicherkatalysator Stickoxide absorbiert, desorbiert und reduziert werden. Stromaufwärts dieses Speicherkatalysators zweigt eine Abgasückführleitung vom Abgassystem ab, welche Abgase in das Einlaßsystem rückführt. Zur Regelung der Ab­ gasrückführung ist in der Abgasrückführleitung ein Steuerorgan angeordnet. Bei Erreichen eines kennfeldmäßig in Abhängigkeit von Drehzahl und Last variierenden NOx-Speicher- Schwellwertes wird von einem Betrieb mit einem Lambda-Wert größer 1 auf einen Betrieb mit einem Lambda-Wert kleiner 1 umgeschaltet. Während des Betriebes mit λ < 1 wird der Speicherkatalysator regeneriert und damit die Stickoxide reduziert. Der Regenerationsbetrieb wird dabei durch Abgasrückführung eingeleitet. Dadurch können die NOx-Emissionen eines Dieselmotors wesentlich verringert werden.Furthermore, a diesel internal combustion engine with a storage catalyst is known from DE 195 43 219 C1, in which storage catalyst nitrogen oxides are absorbed, desorbed and reduced. Upstream of this storage catalytic converter, an exhaust gas recirculation line branches off from the exhaust system, which recirculates exhaust gases into the intake system. A control element is arranged in the exhaust gas recirculation line to regulate the gas recirculation. When a NO x storage threshold value that varies according to the engine speed and load is reached, the system switches from operation with a lambda value greater than 1 to operation with a lambda value less than 1. During operation with λ <1, the storage catalytic converter is regenerated, thereby reducing the nitrogen oxides. The regeneration operation is initiated by exhaust gas recirculation. This can significantly reduce the NO x emissions of a diesel engine.

Es ist die Aufgabe der Erfindung, eine weitere Verbesserung der Emissionen, insbesondere der NOx-, HC- und CO-Emissionen zu erreichen.It is the object of the invention to achieve a further improvement in emissions, in particular NO x , HC and CO emissions.

Erfindungsgemäß wird dies dadurch erwirkt, daß dem ersten Abgaskatalysator ein durch einen Speicherkatalysator gebildeter zweiter Abgaskatalysator nachgeschaltet ist, wobei die Abgas­ rückführleitung stromaufwärts des zweiten Abgaskatalysators vom Auslaßsystem abzweigt. Das rückzuführende Abgas wird dabei nach dem ersten Abgaskatalysator entnommen und in den Ansaugtrakt der Brennkraftmaschine geleitet. Dadurch lassen sich niedrige HC- Emissionen im Abgas erzielen. Der erste Katalysator kann dabei unmittelbar stromabwärts der Zusammenführung von zumindest zwei Abgassträngen angeordnet sein. Die Abgasrückführ­ leitung kann so möglichst kurz gehalten werden. Dies ist insbesonders dann möglich, wenn der erste Abgaskatalysator als Vorkatalysator bzw. Startkatalysator ausgebildet ist und da­ durch volumensmäßige oder thermische Anforderungen geringer sind.According to the invention this is achieved in that the first catalytic converter is replaced by a Storage catalytic converter formed second exhaust gas catalyst is connected downstream, the exhaust gas return line branches upstream of the second catalytic converter from the exhaust system. The exhaust gas to be recycled is removed after the first catalytic converter and in directed the intake tract of the internal combustion engine. This allows low HC Achieve emissions in the exhaust gas. The first catalyst can be directly downstream of the Merging of at least two exhaust gas lines can be arranged. The exhaust gas recirculation the line can be kept as short as possible. This is particularly possible if the first exhaust gas catalytic converter is designed as a pre-catalytic converter or starting catalytic converter and there are lower due to volume or thermal requirements.

Sowohl direkteinspritzende fremd- oder selbstgezündete Brennkraftmaschinen, als auch Brennkraftmaschinen mit Schicht- oder Magerbetrieb enthalten hohe Anteile von Restsauer­ stoff im Abgas. Der erste Katalysator kann somit als Oxidationskatalysator oder als oxidie­ rend betriebener Drei-Weg-Katalysator ausgebildet sein, um die CO- und HC-Emissionen wesentlich zu verringern. Durch die Oxidationsprozesse im Katalysator enthält das rückge­ führte Abgas nur sehr geringe Sauerstoffmengen, wodurch der Inert- und Verdünnungseffekt des rückgeführten Abgas wesentlich größer ist. Es sind somit viel geringere Mengen von rückgeführtem Abgas zur Erzielung des gleichen Effektes notwendig. Die Abgasrückführlei­ tung kann dadurch kleiner dimensioniert werden als bei herkömmlichen Systemen.Both direct-injection externally or self-ignited internal combustion engines, as well Internal combustion engines with shift or lean operation contain high proportions of residual acid substance in the exhaust gas. The first catalyst can thus be used as an oxidation catalyst or as an oxidie rend operated three-way catalyst designed to reduce CO and HC emissions reduce significantly. Due to the oxidation processes in the catalyst, this contains led exhaust gas only very small amounts of oxygen, which causes the inert and dilution effect of the recirculated exhaust gas is much larger. So there are much smaller amounts of recirculated exhaust gas necessary to achieve the same effect. The exhaust gas recirculation system device can be dimensioned smaller than with conventional systems.

Vorzugsweise ist vorgesehen, daß in der Abgasrückführleitung ein Abgasrückführkühler an­ geordnet ist. Dies ermöglicht zusätzlich eine Senkung der NOx-Emissionen, da das Abgas auf einem sehr niedrigen Temperaturniveau der Ansaugluft zugeführt wird. Um die Kondensati­ onsbildung möglichst gering zu halten, kann dabei weiters vorgesehen sein, daß die Einmün­ dung der Abgasrückführleitung in das Einlaßsystem unmittelbar vor dessen Eintritt in den Zylinderkopf der Brennkraftmaschine angeordnet ist.It is preferably provided that an exhaust gas recirculation cooler is arranged in the exhaust gas recirculation line. This also enables a reduction in NO x emissions, since the exhaust gas is supplied to the intake air at a very low temperature level. In order to keep the condensation formation as low as possible, it can further be provided that the mouth of the exhaust gas recirculation line is arranged in the intake system immediately before it enters the cylinder head of the internal combustion engine.

Die Erfindung wird anhand der Figur näher erläutert.The invention is illustrated by the figure.

Die schematisch dargestellte Brennkraftmaschine 1 weist ein Einlaßsystem 2, ein Auslaßsy­ stem 3 und ein Abgasrückführsystem 4 auf. Im Auslaßsystem 3 ist ein erster, als Oxidations­ katalysator oder als Drei-Weg-Katalysator ausgebildeter Abgaskatalysator 5 und ein zweiter, als Speicherkatalysator ausgebildeter Abgaskatalysator 6 angeordnet. Die Abgasrückführlei­ tung 4a des Abgasrückführsystems 4 zweigt dabei vom Auslaßsystem 3 stromabwärts des ersten Abgaskatalysators 5 und stromaufwärts des zweiten Abgaskatalysators 6 ab. In der Ab­ gasrückführleitung 4a ist weiters ein Abgasrückführventil 7 zur Steuerung der Abgasrückfüh­ rung vorgesehen. Das Abgasrückführsystem 4 mündet in den Einlaßsammler 8 des Einlaßsy­ stems 2 unmittelbar vor dem Eintritt in den Zylinderkopf 1a.The schematically illustrated internal combustion engine 1 has an intake system 2 , a Auslaßsy stem 3 and an exhaust gas recirculation system 4 . In the exhaust system 3 , a first, as an oxidation catalyst or as a three-way catalyst designed catalytic converter 5 and a second, designed as a storage catalytic converter 6 is arranged. The exhaust gas recirculation device 4 a of the exhaust gas recirculation system 4 branches off from the exhaust system 3 downstream of the first catalytic converter 5 and upstream of the second catalytic converter 6 . In the gas recirculation line 4 a, an exhaust gas recirculation valve 7 is also provided for controlling the exhaust gas recirculation. The exhaust gas recirculation system 4 opens into the intake manifold 8 of the Einlaßsy stems 2 immediately before entering the cylinder head 1 a.

Mit dieser Anordnung können sehr niedrige HC-Emissionen erreicht werden. Es treten dabei nur geringe und/oder gleichmäßige Pulsationen auf, wodurch eine genaue Zumessung des rückgeführten Abgases über das Abgasrückführventil 7 möglich wird. Die Abzweigung der Abgasrückführleitung 4a erfolgt erst nach der Vereinigung von zwei oder mehreren Auslaß­ stränge, wodurch eine Vergleichmäßigung der Druckpulsation erfolgt.With this arrangement, very low HC emissions can be achieved. There are only slight and / or uniform pulsations, which enables precise metering of the recirculated exhaust gas via the exhaust gas recirculation valve 7 . The branching of the exhaust gas recirculation line 4 a takes place only after the union of two or more outlet strands, whereby an equalization of the pressure pulsation takes place.

Zusätzlich kann in der Abgasrückführleitung 4a ein Abgasrückführkühler 9 vorgesehen sein, wodurch sich eine weitere NOx-Absenkung ermöglichen läßt.In addition, an exhaust gas recirculation cooler 9 can be provided in the exhaust gas recirculation line 4 a, whereby a further NO x reduction can be made possible.

Claims (6)

1. Brennkraftmaschine (1) mit einem Einlaßsystem (2) und einem Auslaßsystem (3), in welchem zumindest ein erster Abgaskatalysator (5) angeordnet ist, sowie mit einem Ab­ gasrückführsystem (4), wobei zur externen Abgasrückführung stromabwärts des ersten Abgaskatalysators (5) eine Abgasrückführleitung (4a) vom Auslaßsystem (3) abzweigt und in das Einlaßsystem (2) mündet, dadurch gekennzeichnet daß dem ersten Abgas­ katalysator (5) ein durch einen Speicherkatalysator gebildeter zweiter Abgaskatalysator (6) nachgeschaltet ist, wobei die Abgasrückführleitung (4a) stromaufwärts des zweiten Abgaskatalysators (6) vom Auslaßsystem (3) abzweigt.1. Internal combustion engine ( 1 ) with an intake system ( 2 ) and an exhaust system ( 3 ), in which at least a first exhaust gas catalytic converter ( 5 ) is arranged, and with an exhaust gas recirculation system ( 4 ), with external exhaust gas recirculation downstream of the first exhaust gas catalytic converter ( 5 ) an exhaust gas recirculation line ( 4 a) branches off from the exhaust system ( 3 ) and opens into the intake system ( 2 ), characterized in that the first exhaust gas catalytic converter ( 5 ) is followed by a second exhaust gas catalytic converter ( 6 ) formed by a storage catalytic converter, the exhaust gas recirculation line ( 4 a) branches upstream of the second catalytic converter ( 6 ) from the exhaust system ( 3 ). 2. Brennkraftmaschine (1) nach Anspruch 1, dadurch gekennzeichnet, daß der erste Ab­ gaskatalysator (5) unmittelbar stromabwärts der Zusammenführung von zumindest zwei Abgassträngen angeordnet ist.2. Internal combustion engine ( 1 ) according to claim 1, characterized in that the first gas catalytic converter ( 5 ) is arranged immediately downstream of the merging of at least two exhaust gas lines. 3. Brennkraftmaschine (1) nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der erste Katalysator (5) als Vorkatalysator bzw. als Startkatalysator ausgebildet ist.3. Internal combustion engine ( 1 ) according to claim 1 or 2, characterized in that the first catalyst ( 5 ) is designed as a pre-catalyst or as a starting catalyst. 4. Brennkraftmaschine (1) nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der erste Katalysator (5) als Oxidationskatalysator oder als Drei-Weg-Katalysator ausgebildet ist.4. Internal combustion engine ( 1 ) according to one of claims 1 to 3, characterized in that the first catalyst ( 5 ) is designed as an oxidation catalyst or as a three-way catalyst. 5. Brennkraftmaschine (1) nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß in der Abgasrückführleitung (4a) ein Abgasrückführkühler (9) angeordnet ist.5. Internal combustion engine ( 1 ) according to one of claims 1 to 4, characterized in that an exhaust gas recirculation cooler ( 9 ) is arranged in the exhaust gas recirculation line ( 4 a). 6. Brennkraftmaschine (1) nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die Einmündung der Abgasrückführleitung (4a) in das Einlaßsystem (3) unmittelbar vor dessen Eintritt in den Zylinderkopf (1a) der Brennkraftmaschine (1) angeordnet ist.6. Internal combustion engine ( 1 ) according to one of claims 1 to 5, characterized in that the confluence of the exhaust gas recirculation line ( 4 a) in the intake system ( 3 ) immediately before its entry into the cylinder head ( 1 a) of the internal combustion engine ( 1 ) is arranged .
DE19853119A 1997-11-20 1998-11-18 Internal combustion engine with an intake system and an exhaust system Revoked DE19853119C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE29825214U DE29825214U1 (en) 1997-11-20 1998-11-18 Catalytic converter and recirculation system for internal combustion engine - has primary catalytic converter followed by a second storage catalytic converter, with exhaust gas recirculation line branching out of the exhaust system upstream of second catalytic converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT0072397U AT2217U3 (en) 1997-11-20 1997-11-20 INTERNAL COMBUSTION ENGINE WITH AN INLET AND EXHAUST SYSTEM

Publications (2)

Publication Number Publication Date
DE19853119A1 true DE19853119A1 (en) 1999-05-27
DE19853119C2 DE19853119C2 (en) 2000-11-16

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19851433A1 (en) * 1998-11-09 2000-05-11 Volkswagen Ag Internal combustion engine exhaust gas purifying device has an exhaust gas recycle device with a control flap for returning a part of the purified gas
DE19924920A1 (en) * 1999-05-31 2000-12-07 Volkswagen Ag Device for exhaust gas recirculation in IC engines has two-part connection line between exhaust side and intake side with regulateable cooling device and throttle valves
WO2000077353A2 (en) 1999-06-15 2000-12-21 Johnson Matthey Public Limited Company Improvements in emissions control
US6439212B1 (en) 2001-12-19 2002-08-27 Caterpillar Inc. Bypass venturi assembly and elbow with turning vane for an exhaust gas recirculation system
WO2002081897A1 (en) * 2001-04-07 2002-10-17 Volkswagen Internal combustion engine having direct injection
US6640542B2 (en) 2001-12-20 2003-11-04 Caterpillar Inc Bypass venturi assembly with single shaft actuator for an exhaust gas recirculation system
US6659092B2 (en) 2001-12-20 2003-12-09 Caterpillar Inc Bypass assembly with annular bypass venturi for an exhaust gas recirculation system
EP1426582A2 (en) * 2002-11-22 2004-06-09 Volkswagen Aktiengesellschaft Method to operate an internal combustion engine with direct injection
WO2008066594A1 (en) * 2006-11-30 2008-06-05 Caterpillar Inc. Low pressure egr system having full range capability
DE10392766B4 (en) * 2002-06-04 2014-01-09 Valeo Thermique Moteur Exhaust pipe for an internal combustion engine with a thermal control of the exhaust gases
CN114251202A (en) * 2020-09-24 2022-03-29 深圳臻宇新能源动力科技有限公司 Engine EGR system and diagnosis method thereof

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20102815U1 (en) 2001-02-17 2001-05-17 Dr.Ing.H.C. F. Porsche Ag, 70435 Stuttgart Internal combustion engine with exhaust gas recirculation
DE10357950A1 (en) * 2003-12-11 2005-07-07 Emitec Gesellschaft Für Emissionstechnologie Mbh Combustion engine exhaust gas system, e.g. for a turbo diesel motor vehicle, has pulsation damping element in the exhaust gas line and or the exhaust gas recirculation line
DE102005049309A1 (en) * 2005-10-12 2007-04-19 Behr Gmbh & Co. Kg Device for returning and cooling exhaust gas of an internal combustion engine

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3739583A (en) * 1972-02-25 1973-06-19 Chemical Construction Corp Control of nitrogen oxides emission from engines
US4213430A (en) * 1975-04-01 1980-07-22 Nissan Motor Company, Limited Spark-ignition internal combustion engine capable of reducing noxious constituents in exhaust gases
US5305720A (en) * 1992-02-28 1994-04-26 Mitsubishi Jidosha Kogyo Kabushiki Kaisha Internal combustion engine
JPH0622554U (en) * 1992-08-28 1994-03-25 富士重工業株式会社 Engine exhaust gas recirculation system
DE19543219C1 (en) * 1995-11-20 1996-12-05 Daimler Benz Ag Diesel engine operating method

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19851433A1 (en) * 1998-11-09 2000-05-11 Volkswagen Ag Internal combustion engine exhaust gas purifying device has an exhaust gas recycle device with a control flap for returning a part of the purified gas
DE19924920A1 (en) * 1999-05-31 2000-12-07 Volkswagen Ag Device for exhaust gas recirculation in IC engines has two-part connection line between exhaust side and intake side with regulateable cooling device and throttle valves
DE19924920B4 (en) * 1999-05-31 2013-03-07 Volkswagen Ag Device and method for exhaust gas recirculation on internal combustion engines
US7189374B1 (en) 1999-06-15 2007-03-13 Johnson Matthey Public Limited Company Emissions control
WO2000077353A2 (en) 1999-06-15 2000-12-21 Johnson Matthey Public Limited Company Improvements in emissions control
WO2002081897A1 (en) * 2001-04-07 2002-10-17 Volkswagen Internal combustion engine having direct injection
US6439212B1 (en) 2001-12-19 2002-08-27 Caterpillar Inc. Bypass venturi assembly and elbow with turning vane for an exhaust gas recirculation system
US6659092B2 (en) 2001-12-20 2003-12-09 Caterpillar Inc Bypass assembly with annular bypass venturi for an exhaust gas recirculation system
US6640542B2 (en) 2001-12-20 2003-11-04 Caterpillar Inc Bypass venturi assembly with single shaft actuator for an exhaust gas recirculation system
DE10392766B4 (en) * 2002-06-04 2014-01-09 Valeo Thermique Moteur Exhaust pipe for an internal combustion engine with a thermal control of the exhaust gases
EP1426582A2 (en) * 2002-11-22 2004-06-09 Volkswagen Aktiengesellschaft Method to operate an internal combustion engine with direct injection
EP1426582A3 (en) * 2002-11-22 2004-10-13 Volkswagen Aktiengesellschaft Method to operate an internal combustion engine with direct injection
WO2008066594A1 (en) * 2006-11-30 2008-06-05 Caterpillar Inc. Low pressure egr system having full range capability
US7591131B2 (en) 2006-11-30 2009-09-22 Caterpillar Inc. Low pressure EGR system having full range capability
CN114251202A (en) * 2020-09-24 2022-03-29 深圳臻宇新能源动力科技有限公司 Engine EGR system and diagnosis method thereof

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AT2217U3 (en) 1999-01-25
AT2217U2 (en) 1998-06-25

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